/*
 * Znovupoužitelné komponenty. Breakpointy: 640 / 768 / 992 / 1200px.
 */

/* ===== Tlačítka ===== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-sm);
    font-weight: 700;
    text-transform: uppercase;
    font-size: var(--fs-sm);
    letter-spacing: .02em;
    transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
    border: 2px solid transparent;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-surface);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
}

.btn--outline {
    border-color: var(--color-surface);
    color: var(--color-surface);
}

.btn--outline:hover {
    background: var(--color-surface);
    color: var(--color-ink);
}

.btn--ghost {
    background: var(--color-surface-alt);
    color: var(--color-ink);
}

.btn--ghost:hover {
    background: var(--color-surface-muted);
}

/* ===== Page hero (malý pruh s nadpisem stránky) ===== */

.page-hero {
    background: var(--color-surface-alt);
    padding: var(--space-8) 0;
    border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
    margin: 0;
}

/* ===== Carousel (sdílený pro banner i produktovou carousel) ===== */

.carousel {
    position: relative;
    overflow: hidden;
}

.carousel__track {
    display: flex;
    transition: transform 400ms ease;
}

.carousel--fade .carousel__track {
    display: block;
}

.carousel--fade .carousel__slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 600ms ease;
    pointer-events: none;
}

.carousel--fade .carousel__slide.is-active {
    opacity: 1;
    pointer-events: auto;
    position: relative;
}

.carousel__prev,
.carousel__next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, .85);
    border-radius: var(--radius-round);
    box-shadow: var(--shadow-sm);
    z-index: 5;
    font-size: 1.25rem;
    color: var(--color-ink);
    transition: background var(--transition-base);
}

.carousel__prev { left: var(--space-2); }
.carousel__next { right: var(--space-2); }

.carousel__prev:hover,
.carousel__next:hover {
    background: var(--color-primary);
    color: var(--color-surface);
}

.carousel__dots {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) 0;
}

.carousel__dots button {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-round);
    background: var(--color-border);
    transition: all var(--transition-base);
}

.carousel__dots button.is-active {
    background: var(--color-primary);
}

/* ===== Hero banner (homepage, uvnitř carousel--fade) ===== */

.hero-slide {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    color: var(--color-surface);
}

.hero-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, .1) 0%, rgba(0, 0, 0, .45) 100%);
}

.hero-slide .container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    width: 100%;
}

.hero-slide__content {
    max-width: 620px;
    padding: var(--space-8);
    text-align: center;
    background: rgba(15, 15, 15, .2);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 600ms ease 150ms, transform 600ms ease 150ms;
}

.carousel__slide.is-active .hero-slide__content {
    opacity: 1;
    transform: translateY(0);
}

.hero-slide__content h2 {
    font-size: var(--fs-2xl);
    line-height: var(--lh-tight);
    margin-bottom: var(--space-4);
    -webkit-text-stroke: 2px rgba(255, 255, 255, .8);
    paint-order: stroke fill;
    text-shadow: 0 2px 16px rgba(0, 0, 0, .55);
}

@media (max-width: 480px) {
    .hero-slide__content {
        padding: var(--space-6);
    }

    .hero-slide__content h2 {
        font-size: 1.5rem;
    }
}

.hero-slide__badge {
    display: inline-block;
    background: var(--color-danger);
    color: var(--color-surface);
    font-weight: 700;
    font-size: var(--fs-base);
    text-transform: uppercase;
    letter-spacing: .03em;
    line-height: 1;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-4);
}

.hero-slide__price {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.hero-slide__price-old {
    color: rgba(255, 255, 255, .7);
    font-size: var(--fs-lg);
    text-shadow: 0 1px 6px rgba(0, 0, 0, .5);
}

.hero-slide__price-arrow {
    color: rgba(255, 255, 255, .55);
    font-size: var(--fs-lg);
}

.hero-slide__price-new {
    font-size: var(--fs-2xl);
    font-weight: 700;
    text-shadow: 0 2px 12px rgba(0, 0, 0, .5);
}

.hero-slide__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
}

.hero-slide__actions .btn {
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-md);
}

@media (min-width: 768px) {
    .hero-slide {
        min-height: 560px;
    }
}

.carousel--fade .carousel__dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: var(--space-4);
    z-index: 2;
    padding: 0;
}

.carousel--fade .carousel__dots button {
    background: rgba(255, 255, 255, .5);
    box-shadow: 0 1px 3px rgba(0, 0, 0, .25);
}

.carousel--fade .carousel__dots button.is-active {
    width: 26px;
    border-radius: var(--radius-pill);
    background: var(--color-surface);
}

/* ===== Product card (sdílená akce.php + homepage carousel) ===== */

.product-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.product-card__image {
    position: relative;
    aspect-ratio: 4 / 3;
    background: var(--color-surface);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 400ms ease;
}

.product-card:hover .product-card__image img {
    transform: scale(1.04);
}

.product-card__badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    z-index: 1;
    background: var(--color-danger);
    color: var(--color-surface);
    font-weight: 700;
    font-size: var(--fs-sm);
    line-height: 1;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-sm);
}

.product-card__body {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    gap: var(--space-2);
    text-align: center;
}

.product-card__title {
    font-family: var(--font-heading);
    font-size: var(--fs-md);
    margin: 0;
}

.product-card__price {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.product-card__price del {
    color: var(--color-ink-muted);
    font-size: var(--fs-sm);
}

.product-card__price span {
    color: var(--color-danger);
    font-weight: 700;
    font-size: var(--fs-lg);
}

.product-card__cta {
    margin-top: var(--space-2);
    width: 100%;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1200px) {
    .product-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ===== Promo banner (nabídka cukru) ===== */

.promo-banner {
    background: var(--color-primary);
    background-size: cover;
    background-position: center;
    border-radius: var(--radius-lg);
    padding: var(--space-6) var(--space-8);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    color: var(--color-surface);
}

.promo-banner h4 {
    margin: 0;
    color: var(--color-surface);
}

/* ===== Filtr galerie ===== */

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.filter-bar__btn {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-pill);
    background: var(--color-surface-alt);
    color: var(--color-ink);
    font-weight: 700;
    font-size: var(--fs-sm);
    transition: background var(--transition-base), color var(--transition-base);
}

.filter-bar__btn.is-active,
.filter-bar__btn:hover {
    background: var(--color-primary);
    color: var(--color-surface);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}

.gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.gallery-item[hidden] {
    display: none;
}

.gallery-item__overlay {
    position: absolute;
    inset: 0;
    background: rgba(106, 175, 8, .85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    color: var(--color-surface);
    font-weight: 700;
    text-transform: uppercase;
}

.gallery-item:hover .gallery-item__overlay {
    opacity: 1;
}

/* ===== Ikonové karty (choosing_reason - o-nas.php, sluzby.php) ===== */

.icon-card {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-4);
    border: 1px dashed var(--color-border-dashed);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-base);
}

.icon-card:hover {
    border-color: var(--color-primary);
}

.icon-card__icon {
    flex: none;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-surface);
    border-radius: var(--radius-round);
    font-size: 1.25rem;
}

.icon-card__title {
    margin: 0 0 var(--space-2);
    font-size: var(--fs-md);
}

.icon-card__text {
    margin: 0;
    color: var(--color-ink-muted);
    font-size: var(--fs-sm);
}

.tip-card {
    padding: var(--space-4);
    background: var(--color-surface-alt);
    border-radius: var(--radius-md);
    font-size: var(--fs-sm);
    color: var(--color-ink-muted);
}

/* ===== Statistiky/čítače (o-nas.php) ===== */

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    text-align: center;
}

.stat__number {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--fs-2xl);
    color: var(--color-primary);
    display: block;
}

.stat__label {
    font-family: var(--font-heading);
    font-style: italic;
    color: var(--color-ink-muted);
    font-size: var(--fs-sm);
}

/* ===== Formulář (kontakt.php) ===== */

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .form-grid--2col {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.form-field--full {
    grid-column: 1 / -1;
}

.form-field--checkbox label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--fs-sm);
    cursor: pointer;
}

.form-field--checkbox input {
    width: auto;
}

.form-field input,
.form-field textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: var(--fs-base);
    color: var(--color-ink);
    background: var(--color-surface);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-field textarea {
    min-height: 160px;
    resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-tint);
}

.form-field input:invalid:not(:placeholder-shown),
.form-field textarea:invalid:not(:placeholder-shown) {
    border-color: var(--color-danger);
}

.form-message {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
}

.form-message--success {
    background: var(--color-primary-tint);
    color: var(--color-primary-dark);
}

.form-message--error {
    background: #fbe4e4;
    color: var(--color-danger);
}

.contact-modal {
    border: none;
    border-radius: var(--radius-md);
    padding: var(--space-6);
    max-width: 380px;
    width: calc(100% - var(--space-8));
    box-shadow: var(--shadow-lg);
}

.contact-modal::backdrop {
    background: rgba(0, 0, 0, .5);
}

.contact-modal__body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    text-align: center;
}

.contact-modal__body p {
    margin: 0;
    font-weight: 700;
}

.contact-modal--error .contact-modal__body p {
    color: var(--color-danger);
}

/* ===== Kontaktní karty (kontakt.php adresa) ===== */

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact-info__item {
    display: flex;
    gap: var(--space-4);
}

.contact-info__icon {
    flex: none;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-tint);
    color: var(--color-primary);
    border-radius: var(--radius-round);
    font-size: 1.25rem;
}

.contact-info__item h5 {
    margin: 0 0 var(--space-1);
    font-size: var(--fs-md);
}

.contact-info__item p,
.contact-info__item ul {
    margin: 0;
    color: var(--color-ink-muted);
    font-size: var(--fs-sm);
}

.contact-info__item ul li {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
    padding: 2px 0;
}